QT325S-50.2232MDIJ-T

Overview

The QST QT325S-50.2232MDIJ-T is a surface-mount crystal oscillator operating at a fundamental frequency of 50.2232 MHz. It utilizes a 4-SMD, no-lead package with dimensions of 3.2x2.5x0.7 mm. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. Frequency stability is rated at ±20 ppm within the -20°C to +70°C temperature range.

Feature Summary

• Surface-mount design for automated assembly
• Fundamental mode operation for precise timing
• Compact footprint suitable for space-constrained PCB layouts

Applications

• Automotive body electronics
• Automotive lighting systems
• General industrial control circuits

Procurement Notes

Verify the specific suffix 'D' corresponds to the required ±20 ppm stability rating for your application environment. Confirm that the 18 pF load capacitance matches the host circuit's requirements. Ensure the operating temperature range of -20°C to +70°C aligns with the system's thermal profile. Request the manufacturer datasheet to validate mechanical dimensions and soldering recommendations before finalizing the bill of materials.

Selection Notes

Select this component when a stable 50.2232 MHz reference is needed for automotive or industrial applications. The choice depends on the compatibility of the 18 pF load capacitance with the oscillator circuit. Consider the ±20 ppm stability requirement against the system's jitter tolerance. The SMD form factor must fit the designated board space. Verify that the 50 Ohm ESR is acceptable for the driving gate input impedance.

Part Context

This part belongs to QST's QT325S series of thin-package crystals. These components are designed for high-volume surface-mount technology processes. The series offers various frequency options and stability grades. The specific model integrates standard AT-cut quartz resonator technology. It serves as a clock source for microcontrollers and communication interfaces.

Replacement Considerations

Direct substitutes must match the 50.2232 MHz frequency, 18 pF load capacitance, and 4-SMD no-lead package. Verify equivalent stability ratings of ±20 ppm over the same temperature range. Check for identical ESR values to ensure circuit oscillation reliability. Cross-reference pinout and mechanical tolerances to guarantee board compatibility.